"If I can get parallel computing into the schools that will be a great
achievement, because then we wouldn't get all these kids thinking the
world is sequential."

I agree; and a highly concurrent Raspberry Pi-like board could garner a
lot of interest - even if to begin with only in the form of a simulator.

May I suggest that those interested in this aspect of educational
outreach consider joining the CAS-Online forum**? People working at the
architecture end of things are somewhat under-represented there, though
there is plenty of hand-waving about "the industry". Discussions about
concurrency (beyond the entry-level way one can explore it in MIT's
"Scratch") are conspicuous by their absence. To establish concurrency as
a serious topic it needs to be brought to the attention of the
examination boards who design the curriculum, as well as to teachers.
CAS has already responded to the new National Curriculum proposals, but
needless to say things are still in a somewhat "melting-pot" stage.